样式中找到第n个子元素 电脑版发表于：2025/2/28 17:41 代码如下： ``` .sta-training-item:nth-child(1){ background-image: url('~@/static/imgs/teacher-center/training_back1.png'); } .sta-training-item:nth-child(2){ background-image: url('~@/static/imgs/teacher-center/training_back2.png'); } .sta-training-item:nth-child(3){ background-image: url('~@/static/imgs/teacher-center/training_back3.png'); } ```
